logd_markdown 0.1.0

Markdown (GFM) encoder and pre-wired file handler satellite package for logd.

0.1.0

• Initial Stable Release: Promoted logd_markdown to a mature, standalone satellite package.
• Core Components: Introduced MarkdownFormatter, MarkdownEncoder, and MarkdownFileHandler for GitHub-Flavored Markdown (GFM) log rendering.
• Async Isolate Execution (MarkdownFileHandler.async): Added MarkdownFileHandler.async() for non-blocking disk persistence on a background isolate, leveraging direct @immutable formatter/decorator transfer in Dart 3.7+.
• Exhaustive Semantic IR Support: Encodes all core semantic IR node types (TableNode, CodeBlockNode, ListNode, BlockquoteNode, MapNode, and KeyValueNode) into valid GFM syntax.
• Encoder Auto-Injection: Implemented MarkdownFormatter to inject MarkdownEncoder dynamically via AutoEncoder.encoderKey metadata, maintaining clean separation between semantic formatting and physical string layout.
• Isolate Registry: Added registerLogdMarkdownSerializers() to register MarkdownFormatter and MarkdownEncoder with LoggerSerializationRegistry for configuration import/export.
• Testing & Regression Safeguards: Established a golden test harness validating GFM output against baseline files across standard and error payloads.
• Documentation & Examples: Added architecture.md, benchmarks.md, migration_guide.md, standard examples (example/main.dart), and file rotation patterns (example/extra/).